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Near InfraRed Fluorescence Using Indocyanine Green and Magnetic Resonance Lymphography of Lymphatic Transport

2019-08-11 17:06:57 | BioPortfolio

Summary

Lymphatic transport will be examined using Near InfraRed Indocyanine Green fluorescence imaging (NIR-ICG) and magnetic resonance lymphography (MRL) of the upper extremities. The purpose of the study is to establish if NIR-ICG is a valid clinical outcome for quantifying lymphatic vessel drainage.

Description

Lymphedema from various etiologies (i.e. infection, cancer, surgery, and rheumatoid arthritis) remains a major health concern. Efforts to develop effective treatments for this condition have been limited by the absence of quantitative outcome measures for lymphatic function. Published articles have supported the fact that human lymphatic contractions can be readily visualized after intradermal administration of micrograms of Indocyanine Green using laser-induced fluorescence. We recently demonstrated the feasibility of NIR imaging to quantify lymphatic drainage in the hands, wrists and forearms of healthy volunteers following intradermal web space ICG injection into the hand . To establish this emerging technology as a valid clinical outcome measure, however, we must address two major questions that confound interpretation of the imaging results: 1) are the ICG filled vessels lymphatic vessels and/or small veins?; and 2) does NIR-ICG imaging following web space injection fully capture lymphatic flow from the metacarpophalangeal (MCP) joints that are most commonly involved in RA? To answer these questions, healthy patients will be recruited to have intradermal and intra-articular injections of ICG and gadolinium followed by an imaging sessions (NIR or magnetic resonance imaging) to measure lymphatic contraction rates and flow.

Study Design

Conditions

Rheumatoid Arthritis

Intervention

Indocyanine Green, MultiSpectral Imaging System

Status

Not yet recruiting

Source

University of Rochester

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-08-11T17:06:57-0400

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Medical and Biotech [MESH] Definitions

Arthritis in children, with onset before 16 years of age. The terms juvenile rheumatoid arthritis (JRA) and juvenile idiopathic arthritis (JIA) refer to classification systems for chronic arthritis in children. Only one subtype of juvenile arthritis (polyarticular-onset, rheumatoid factor-positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent.

Rheumatoid arthritis of children occurring in three major subtypes defined by the symptoms present during the first six months following onset: systemic-onset (Still's Disease, Juvenile-Onset), polyarticular-onset, and pauciarticular-onset. Adult-onset cases of Still's disease (STILL'S DISEASE, ADULT-ONSET) are also known. Only one subtype of juvenile rheumatoid arthritis (polyarticular-onset, rheumatoid factor-positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent.

A variable mixture of the mono- and disodium salts of gold thiomalic acid used mainly for its anti-inflammatory action in the treatment of rheumatoid arthritis. It is most effective in active progressive rheumatoid arthritis and of little or no value in the presence of extensive deformities or in the treatment of other forms of arthritis.

Systemic-onset rheumatoid arthritis in adults. It differs from classical rheumatoid arthritis in that it is more often marked by acute febrile onset, and generalized lymphadenopathy and hepatosplenomegaly are more prominent.

A tricarbocyanine dye that is used diagnostically in liver function tests and to determine blood volume and cardiac output.

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